Twenty or so of the 99Problems series remain "unsolved" in perl6. Try coding a perl6 solution, express the solution as a test, and add to t/spec/integration/ in the test suite (see test suite refactoring). Use the existing solutions as guidance. If you have a solution, but do not have a comit bit for the pugs repository, try posting the solution on perl6-users list.

Hacking the Perl 6 docs

In general, official docs are stored in docs/Perl6 and docs/Pugs in POD format, and they are fair game to improve directly. The exception is most of the documents in docs/Perl6/Spec which is the official Perl 6 specification. Improvements to the official spec should be suggested to the perl6-language list.

Every year, people, companies, professionals and foundations give numerous multi-million donations to universities for new buildings, new faculty, and so on. Perl 6 is at least as important, and will have far greater ultimate techno-economic leverage in the great majority of cases. (Also, don't just think about Perl 6.0 — you want to establish major momentum to carry on through Perl 6.2, Perl 6.4, and so on — including the production of a growing series of CPAN6 power modules.)